Suppose the Wavelength of the 656

question 76

Multiple Choice

Suppose the wavelength of the 656.3-nm line in the hydrogen spectrum is shifted to 656.8 nm for light from a particular star.What can you deduce for the speed of the star relative to us?

• A)914 km/s toward us
• B)457 km/s toward us
• C)914 km/s away from us
• D)none of these answers
• E)457 km/s away from us

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Definitions:

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